NL8303934A - Variable transmission with hydraulically controlled 'V' belt pulleys - one side of each pulley produced as piston supplied with pressure regulated hydraulic fluid - Google Patents

Variable transmission with hydraulically controlled 'V' belt pulleys - one side of each pulley produced as piston supplied with pressure regulated hydraulic fluid Download PDF

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Publication number
NL8303934A
NL8303934A NL8303934A NL8303934A NL8303934A NL 8303934 A NL8303934 A NL 8303934A NL 8303934 A NL8303934 A NL 8303934A NL 8303934 A NL8303934 A NL 8303934A NL 8303934 A NL8303934 A NL 8303934A
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NL
Netherlands
Prior art keywords
pressure
pulley
belt pulleys
piston
hydraulically controlled
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Application number
NL8303934A
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Dutch (nl)
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NL182164C (en
NL182164B (en
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Doornes Transmissie Bv
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Priority to NLAANVRAGE8303934,A priority Critical patent/NL182164C/en
Publication of NL8303934A publication Critical patent/NL8303934A/en
Publication of NL182164B publication Critical patent/NL182164B/en
Application granted granted Critical
Publication of NL182164C publication Critical patent/NL182164C/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F16H61/66272—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members characterised by means for controlling the torque transmitting capability of the gearing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

A continuously variable power transmission system uses hydraulically controlled 'V' belt pulleys to vary the transmission ratio. The input pulley consists of a fixed section (4) coupled to the input shaft (1). The moving side of the pulley is formed by a hydraulic piston (3). A similar unit is used for the output pulley with the exception that the piston diameter (6) is smaller than the input piston. The pressure applied to the output stage (Ps) is determined by the spring rating (16) of a relief valve (14) in the supply line from a gear pump (13). The pump output is also taken over a spool valve (18) to regulate the pressure (Pp) applied to the input pulley. Once the secondary pressure has been set at a constant value the primary pressure (Pp) may be regulated to give the required transmission ratio.

Description

é-, , VO 4866 .é-, VO 4866.

' — f —'- f -

Hydraulisch geregelde drijfriemoverbrenging.Hydraulically controlled drive belt transmission.

De uitvinding heeft betrekking op een overbrengingsmechanisme met een traploos variabele overbrengingsverhouding, voorzien 5 van een paar primaire en een paar secundaire konische, ten opzichte van elkaar axiaal verschuifbare schijven, van een primaire en een secundaire hydraulische bedieningscilinder voor het onderling verschuiven van de konische schijven van de respectieve schijvenparen en van hydraulische regel-10 middelen met een vloeistofgeleiding naar de secundaire hydraulische bedieningscilinder.The invention relates to a transmission mechanism with an infinitely variable transmission ratio, comprising a pair of primary and a pair of secondary conical discs, axially displaceable relative to each other, of a primary and a secondary hydraulic operating cylinder for mutually shifting the conical discs of the respective pairs of discs and hydraulic control-10 means with fluid conduction to the secondary hydraulic control cylinder.

Een dergelijk.- overbrengingsmechanisme is bekend uit het Amerikaanse Octrooischrift 3.782.213.Such a transmission mechanism is known from United States Patent Specification 3,782,213.

Een nadeel van een dergelijk overbrengingsmechanisme is de 15 extra opbouw van hydraulische druk in de bedieningscilinders ten gevolge van de rotatie (centrifugaaleffekt). Dit probleem - doet zich met name voor in de secundaire bedieningscilinder, omdat daarbij de hoogste toerentallen voorkomen. Het genoemde Amerikaanse octrooischrift 3.782.213 beschrijft dit probleem' 20 en geeft een oplossing door middel van extra cilinderruimte (kompensatie kamer).A drawback of such a transmission mechanism is the additional build-up of hydraulic pressure in the operating cylinders as a result of the rotation (centrifugal effect). This problem - mainly occurs in the secondary operating cylinder, because the highest speeds occur. Said United States Patent Specification 3,782,213 describes this problem and provides a solution by means of extra cylinder space (compensation chamber).

De uitvinding beoogt een overbrengingsmechanisme waarbij de extra drukopbouw ten gevolge van het centrifugaaleffekt, althans gedeeltelijk, op eenvoudige wijze wordt gekompenseerd.The object of the invention is a transmission mechanism in which the additional pressure build-up due to the centrifugal effect is at least partially compensated.

25 Hiertoe is volgens de uitvinding de vloeistofgeleiding voorzien van een stationaire kamer waarin zich een met de secundaire cilinder roterende rotor bevindt, welke rotor is voorzien van een radiaal gerichte vloeistofleiding (roterende inlaat) .For this purpose, according to the invention, the liquid guide is provided with a stationary chamber in which a rotor rotating with the secondary cylinder is located, which rotor is provided with a radially oriented liquid pipe (rotating inlet).

30 Bij het door de vloeistofleiding stromen van de vloeistof, radiaal van buiten naar binnen, zal de druk van de vloeistof, 8303934 -2- - ψ afhankelijk van de rotatiesnelheid van de rotor afnemen, hetgeen een verlaging van de vloeistofdruk in de secundaire be-dieningscilinder tot gevolg heeft. Deze verlaging kan de verhoging van die vloeistofdruk wegens het centrifugaaleffekt 5 gedeeltelijk of geheel kompenseren of overkompenseren.As the fluid flows radially from the outside to the interior through the fluid line, the pressure of the fluid will decrease depending on the rotational speed of the rotor, which will decrease the fluid pressure in the secondary flow. resulting in a service cylinder. This reduction can partially or completely compensate for the increase in that liquid pressure due to the centrifugal effect.

Ter verduidelijking van de uitvinding zal aan de hand van de tekening een uitvoeringsvoorbeeld worden beschreven.To clarify the invention, an exemplary embodiment will be described with reference to the drawing.

Figuur 1 toont schematisch een drijfriemoverbrenging voorzien van een roterende inlaat, en 10 figuur 2 toont de roterende inlaat in voor-aanzicht.Figure 1 schematically shows a drive belt transmission provided with a rotating inlet, and Figure 2 shows the rotating inlet in front view.

De drijfriemoverbrenging is volgens de tekening voorzien van een ingaande as 1, die vast verbonden is met een konische schijf 4 van het primaire schijvenpaar. Konische schijf 3 is de andere, axiaal verschuifbare schijf van het primaire schy^ 15 venpaar.. Het primaire schijvenpaar is d.m.v. de drijfriem 9 verbonden met het secundaire schijvenpaar, bestaande uit een vast met de uitgaande as 2 verbonden konische schijf 5 en een axiaal verplaatsbare konische schijf 6. Konische schijf 6 wordt verplaatst d.m.v. vloeistofdruk in de cilinderruimte 31. 20 van de secundaire hydraulische bedieningscilinder die verbon-... den is met konische schijf 6.According to the drawing, the drive belt transmission is provided with an input shaft 1, which is fixedly connected to a conical disk 4 of the primary disk pair. Conical disk 3 is the other axially slidable disk of the primary disk pair. The primary disk pair is by the drive belt 9 connected to the secondary disk pair, consisting of a conical disk 5 fixedly connected to the output shaft 2 and an axially displaceable conical disk 6. Conical disk 6 is displaced by means of fluid pressure in the cylinder space 31.20 of the secondary hydraulic operating cylinder connected to conical disk 6.

Het overbrengingsmechanisme wordt bediend door hydraulische regelmiddelen, die vloeistof met een druk Pp toevoeren naar de primaire bedieningscilinder en vloeistof met een druk PThe transmission mechanism is operated by hydraulic control means, which supply liquid with a pressure Pp to the primary operating cylinder and liquid with a pressure P

9 25 naar de secundaire bedieningscilinder.9 25 to the secondary control cylinder.

Zoals in de tekening aangegeven passeert de vloeistof met de druk P een stationaire kamer 37 waarin een rotor 38 is aan-s gebracht, in de rotor 38, die met de secundaire as 2 meedraait, kan de vloeistof via een radiaal gerichte leiding 30 stromen, welke leiding de stationaire kamer 37 verbindt met een centraal in de secundaire as aangebrachte vloeistoflei-ding.As indicated in the drawing, the liquid with the pressure P passes through a stationary chamber 37 in which a rotor 38 is arranged, into the rotor 38, which rotates with the secondary shaft 2, the liquid can flow via a radially directed pipe 30, which conduit connects the stationary chamber 37 to a fluid conduit centrally located in the secondary shaft.

8303934 jéééjjSi- .8303934 jéééjjSi-.

-3--3-

De vloeistofdruk in de bedieningscilinder 31 ondervindt een extra verhoging bij rotatie van de secundaire as (centrifu-gaaleffekt). Gehele of gedeeltelijke kompensatie van die verhoging vindt plaats· door een overeenkomstige verlaging van de 5 vloeistofdruk in het centrale deel van de rotor 38 ten opzichte van de buitenkant van de rotor 38, d.w.z. in kamer 37.The liquid pressure in the operating cylinder 31 is additionally increased when the secondary shaft is rotated (centrifugal effect). Full or partial compensation of that increase takes place by a corresponding reduction of the liquid pressure in the central part of the rotor 38 relative to the outside of the rotor 38, i.e. in chamber 37.

Naast een gehele of gedeeltelijk kompensatie is er ook de mogelijkheid van meer dan gehele kompensatie (overkompensatie), n.1. door de instroomopening van rotor 38 verder van de draai-10 ingsas te leggen.In addition to full or partial compensation, there is also the option of more than full compensation (overcompensation), n.1. by placing the inflow opening of rotor 38 further from the axis of rotation.

Deze overkompensatie kan worden toegepast bij krachtbronnen 2oals verbrandingsmotoren, waarbij het maximale koppel afneemt bij toenemend toerental. Ook is overkompensatie mogelijk door gelijktijdig toepassen van de eerdergenoemde kompensatiLer-15 kamer (beschreven in het Amerikaanse octrooischrift 3.782.213) en de roterende inlaat.This overcompensation can be applied to power sources 2 such as internal combustion engines, where the maximum torque decreases with increasing speed. Overcompensation is also possible by using the aforementioned compensation chamber (described in U.S. Pat. No. 3,782,213) and the rotary inlet simultaneously.

8 3 0 3.9 3 48 3 0 3.9 3 4

Claims (1)

-V- - CONCLUSIE • 1111 ' 1 1 1 1 * Overbrengingsmechanisme met een traploos variabele overbrenging s verhouding voorzien van een paar primaire en een paar secundaire konische, ten opzichte van elkaar axiaal verschuif--5 bare schijven, van een primaire en een secundaire hydrau- : lische bedieningscilinder voor het onderling verschuiven van de konische schijven van de respectieve schijvenparen en van hydraulische regelmiddelen met een vloeistofgeleiding naar de secundaire hydraulische bedieningscilinder, met het kenmerk, 10 dat de vloeistofgeleiding voorzien is van een stationaire kamer (37) waarin zich een met de secundaire cilinder roterende, rotor (38) bevindt, welke rotor (38) is voorzien van een radiaal gerichte vloeistofleiding. 8303934-V- - CONCLUSION • 1111 '1 1 1 1 * Gear mechanism with infinitely variable gear ratio with a pair of primary and a pair of secondary conical, axially displaceable discs, of a primary and a secondary hydraulic operating cylinder for mutually shifting the conical discs of the respective disc pairs and of hydraulic control means with a liquid guide to the secondary hydraulic operating cylinder, characterized in that the liquid guide is provided with a stationary chamber (37) in which a rotor (38) rotating with the secondary cylinder, which rotor (38) is provided with a radially directed liquid line. 8303934
NLAANVRAGE8303934,A 1974-11-15 1983-11-16 DRIVE BELT TRANSMISSION WITH A VARIABLE TRANSMISSION RATIO. NL182164C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE8303934,A NL182164C (en) 1974-11-15 1983-11-16 DRIVE BELT TRANSMISSION WITH A VARIABLE TRANSMISSION RATIO.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL7414914 1974-11-15
NL7414914A NL175096C (en) 1974-11-15 1974-11-15 VARIABLE VARIABLE TRANSMISSION TRANSMISSION WITH HYDRAULIC PRESSURE CONTROL OF THE SIDE PRESSURE ON THE BELT OR BELT.
NL8303934 1983-11-16
NLAANVRAGE8303934,A NL182164C (en) 1974-11-15 1983-11-16 DRIVE BELT TRANSMISSION WITH A VARIABLE TRANSMISSION RATIO.

Publications (3)

Publication Number Publication Date
NL8303934A true NL8303934A (en) 1984-04-02
NL182164B NL182164B (en) 1987-08-17
NL182164C NL182164C (en) 1988-01-18

Family

ID=19822481

Family Applications (2)

Application Number Title Priority Date Filing Date
NL7414914A NL175096C (en) 1974-11-15 1974-11-15 VARIABLE VARIABLE TRANSMISSION TRANSMISSION WITH HYDRAULIC PRESSURE CONTROL OF THE SIDE PRESSURE ON THE BELT OR BELT.
NLAANVRAGE8303934,A NL182164C (en) 1974-11-15 1983-11-16 DRIVE BELT TRANSMISSION WITH A VARIABLE TRANSMISSION RATIO.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL7414914A NL175096C (en) 1974-11-15 1974-11-15 VARIABLE VARIABLE TRANSMISSION TRANSMISSION WITH HYDRAULIC PRESSURE CONTROL OF THE SIDE PRESSURE ON THE BELT OR BELT.

Country Status (3)

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DE (2) DE2518496C2 (en)
IT (1) IT1036325B (en)
NL (2) NL175096C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL181597C (en) * 1976-10-05 1987-09-16 Volvo Car Bv CONTINUOUSLY VARIABLE TRANSMISSION.
DE2744947C3 (en) * 1977-10-06 1980-10-23 P.I.V. Antrieb Werner Reimers Kg, 6380 Bad Homburg Infinitely adjustable conical pulley belt drive
JPS56138556A (en) * 1980-03-28 1981-10-29 Aisin Warner Ltd Hydraulic pressure controlling apparatus for v-belt type stepless transmission for vehicle
US4571219A (en) * 1980-09-15 1986-02-18 Daniel Corporation Bicycle transmission
JPS6060361A (en) * 1983-09-10 1985-04-06 Fuji Heavy Ind Ltd Hydraulic pressure control device of continuously variable transmission
NL8400296A (en) * 1984-02-01 1985-09-02 Doornes Transmissie Bv INFLATABLE VARIABLE TRANSMISSION.
NL8403461A (en) * 1984-11-13 1986-06-02 Doornes Transmissie Bv INFLATABLE VARIABLE TRANSMISSION.
JPH023772A (en) * 1989-04-07 1990-01-09 Aisin Aw Co Ltd Speed change control device for v-belt type continuously variable transmission in vehicle
DE4112410A1 (en) * 1991-04-16 1992-10-29 Klaus Meinert CONTINUOUSLY CONTINUOUSLY CONTINUOUSLY GEARED
DE4128457C1 (en) * 1991-08-28 1992-12-24 P.I.V. Antrieb Werner Reimers Gmbh & Co Kg, 6380 Bad Homburg, De
JP2005291317A (en) * 2004-03-31 2005-10-20 Jatco Ltd Pulley structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256023B (en) * 1964-02-29 1967-12-07 Piv Antrieb Reimers Kg Werner Infinitely adjustable conical pulley belt drive
DE2118083C3 (en) * 1971-04-14 1973-11-15 P.I.V. Antrieb Werner Reimers Kg, 6380 Bad Homburg Pulley set for belt pulleys

Also Published As

Publication number Publication date
NL7414914A (en) 1976-05-18
NL182164C (en) 1988-01-18
IT1036325B (en) 1979-10-30
NL175096C (en) 1984-09-17
DE2560653C2 (en) 1988-06-01
NL175096B (en) 1984-04-16
DE2518496A1 (en) 1976-05-20
DE2518496C2 (en) 1986-10-02
NL182164B (en) 1987-08-17

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A1B A search report has been drawn up
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